Fix GN args in chromeos_build_instructions.md

Values for is_chrome_branded and is_official_build
were incorrect.

Bug: None
Change-Id: I881f04e57e5c5e9b8cd0a7727d9d2fe41c4eb686
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4227051
Commit-Queue: Satoru Takabayashi <satorux@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1103717}

docs/chromeos_build_instructions.md

@@ -76,8 +76,8 @@ or running `gn args out/Default`:
 
     # Set the following true to create a Chrome (instead of Chromium) build.
     # This requires a src-internal checkout.
-    is_chrome_branded = false  # Adds internal features and branded art assets.
-    is_official_build = false  # Turns on many optimizations, slower build.
+    is_chrome_branded = true   # Adds internal features and branded art assets.
+    is_official_build = true   # Turns on many optimizations, slower build.
 
 NOTE: You may wish to replace 'Default' with something like 'Cros' if
 you switch back and forth between Linux and Chromium OS builds, or 'Debug'